CN218377297U

CN218377297U - Large pin shaft of light type

Info

Publication number: CN218377297U
Application number: CN202222699868.8U
Authority: CN
Inventors: 陈漪婷
Original assignee: Guangzhou Kexiong Precision Machinery Co ltd
Current assignee: Guangzhou Kexiong Precision Machinery Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-01-24
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses a big round pin axle of light type, including the round pin axle body that one end fixed connection has the spacing head, the round pin axle body is kept away from one side of spacing head and can be dismantled and be connected with the locating part, and the terminal surface that the round pin axle body was kept away from to the spacing head has seted up straight hole, and straight hole is pegged graft and is had the straight-bar, and the outer peripheral face of straight-bar is provided with the rib, and the rib offsets with the inner peripheral surface in straight hole. Through adopting above-mentioned setting, can lighten weight, and then realize the function convenient to carry and material cost is practiced thrift.

Description

Large pin shaft of light type

Technical Field

The utility model relates to a technical field of fastener, concretely relates to big round pin axle of light type.

Background

The pin shaft is a standardized fastener, can be fixedly connected statically, can also move relative to a connected piece, and is mainly used at the hinged part of two parts to form a hinged structure. The pin shaft is usually locked by a cotter pin, and has reliable work and convenient disassembly. Pins are also commonly used for articulation between two parts in large equipment, such as machine tools, trusses, etc. Because the volume of large-scale equipment is great, consequently the round pin axle that needs to choose for use is also great.

The pin shaft structure in the prior art is usually a solid structure, and for a pin shaft with a large size, on one hand, the pin shaft is heavy in weight and not easy to carry and transport; on the other hand, the raw material required for production is increased, and the production cost is increased. And it can reduce its whole weight not to have a pin structure among the prior art yet, is convenient for carry simultaneously and practices thrift the cost. Therefore, there is room for improvement.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a large pin shaft of light type can lighten the weight thereof and then realize the functions of being convenient for to carry and saving raw material cost.

The purpose of the utility model is realized through the following technical scheme:

the light large pin shaft comprises a pin shaft body, wherein one end of the pin shaft body is fixedly connected with a limiting head, one side, far away from the limiting head, of the pin shaft body is detachably connected with the limiting part, a straight hole is formed in the end face, far away from the pin shaft body, of the limiting head, a straight rod is inserted into the straight hole, the outer peripheral surface of the straight rod is provided with a reinforcing part, and the reinforcing part abuts against the inner peripheral surface of the straight hole.

Further, the reinforcing part comprises a plurality of reinforcing straight bars integrally connected with the outer peripheral surface of the straight bar, the plurality of reinforcing straight bars are distributed in an equiangular mode along the annular direction relative to the axis of the straight bar, and an arc reinforcing part is arranged between every two adjacent reinforcing straight bars.

Preferably, the reinforcing part comprises reinforcing thread strips integrally connected with the outer peripheral surface of the straight rod, the reinforcing thread strips are arranged in a spiral direction relative to the axis of the straight rod, and a fillet is arranged between the thread wall surface of each reinforcing thread strip and the outer peripheral surface of the straight rod.

Further, a positioning block is fixedly connected to one end of the straight rod, a positioning groove is formed in the end face, away from the pin shaft body, of the limiting head, the positioning groove is communicated with the straight hole, the positioning block is connected with the positioning groove in an inserted mode, and the positioning block is contained in the positioning groove.

Further, the outer circumferential surface of the positioning block is provided with an external thread portion, the inner circumferential surface of the positioning groove is provided with an internal thread portion, and the positioning block is in threaded connection with the internal thread portion of the positioning groove through the external thread portion.

Further, an inner hexagonal groove is formed in the end face, far away from the straight rod, of the positioning block.

Further, the limiting part comprises a limiting hole which is formed in the outer peripheral surface of the pin shaft body and is far away from one side of the limiting head, and the limiting hole is used for inserting a bolt.

Further, the length of the straight rod is smaller than that of the pin shaft body, the straight hole penetrates through the pin shaft body, a threaded connection portion is arranged on one side, away from the limiting head, of the inner peripheral surface of the straight hole, a connecting column is in threaded connection with the threaded connection portion, a limiting block is fixedly connected to one end, away from the pin shaft body, of the connecting column, and the outline of the outer peripheral surface of the limiting block is larger than that of the outer peripheral surface of the pin shaft body.

Further, the outer peripheral surface of the limiting block is provided with anti-skidding lines.

Further, the outer circumferential surface of the pin shaft body is provided with a threaded oil groove, and the threaded oil groove is arranged in a spiral direction relative to the axis of the pin shaft body.

The utility model discloses following beneficial effect has:

a light-weight large pin shaft aims to reduce the whole weight and further realize the functions of convenient transportation and raw material cost saving. Therefore, the straight hole is formed in the end face, far away from the pin shaft body, of the limiting head, the straight rod is inserted into the straight hole, the reinforcing portion of the straight rod abuts against the inner circumferential surface of the straight hole, the structural strength of the overall structure of the pin shaft body is reinforced, and meanwhile, due to the fact that a gap exists between the straight rod and the straight hole, the function of reducing the weight of the overall structure is achieved. In addition, through setting up spacing head and locating part respectively at the both ends of round pin axle body, mainly in order to realize utilizing the utility model discloses a two parts of this body coupling of round pin axle to realize two mutual articulated functions of part, utilize the limiting displacement of spacing head and locating part simultaneously when using, thereby reduce the condition that the round pin axle body drops.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an exploded sectional view of the entire structure of example 1.

Fig. 3 is an exploded view of the entire structure of example 2.

In the figure: 1. a pin shaft body; 11. a limiting head; 12. a straight hole; 13. positioning a groove; 14. an internal thread portion; 15. a threaded connection; 16. a limiting hole; 17. a threaded oil groove; 2. a straight rod; 21. positioning a block; 22. an external threaded portion; 23. an inner hexagonal groove; 24. reinforcing the straight bars; 25. a circular arc reinforcement portion; 26. reinforcing the thread strips; 27. rounding off; 3. connecting columns; 31. a limiting block; 32. and (4) anti-skid lines.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. In the present specification, the terms "upper", "inner", "middle", "left", "right" and "one" are used for convenience of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the corresponding parts may be changed or adjusted without substantial technical changes.

Example 1

Referring to fig. 1 to 2, a light-weight large pin comprises a pin body 1, one end of the pin body 1 is fixedly connected with a limiting head 11, one side, away from the limiting head 11, of the pin body 1 is detachably connected with the limiting part, a straight hole 12 is formed in the end face, away from the pin body 1, of the limiting head 11, the straight hole 12 is connected with a straight rod 2 in an inserted mode, a reinforcing portion is arranged on the outer peripheral surface of the straight rod 2, and the reinforcing portion abuts against the inner peripheral surface of the straight hole 12.

Specifically, the utility model discloses aim at alleviateing whole weight, and then realize the function of being convenient for transport and material saving cost. Therefore, the straight hole 12 is formed in the end face, away from the pin shaft body 1, of the limiting head 11, the straight rod 2 is inserted into the straight hole 12, the reinforcing portion of the straight rod 2 abuts against the inner circumferential surface of the straight hole 12, the structural strength of the overall structure of the pin shaft body 1 is reinforced, and meanwhile, due to the fact that a gap exists between the straight rod 2 and the straight hole 12, the function of reducing the weight of the overall structure is achieved. In addition, through setting up spacing head 11 and locating part respectively at the both ends of round pin axle body 1, mainly in order to realize utilizing the utility model discloses a round pin axle body 1 connects two parts to realize two mutual articulated functions of part, utilize the limiting displacement of spacing head 11 and locating part simultaneously when using, thereby reduce the condition that round pin axle body 1 drops.

Referring to fig. 1 to 2, in order to realize that the straight rod 2 abuts against the inner wall of the straight hole 12 by using the reinforced portion thereof, so as to realize strength compensation, and simultaneously, a corresponding required gap can be provided for the position between the straight hole 12 and the straight rod 2, thereby achieving the function of reducing weight. The reinforcing part comprises a plurality of reinforcing straight strips 24 integrally connected with the peripheral surface of the straight rod 2, the number of the reinforcing straight strips 24 is four in the embodiment, the plurality of reinforcing straight strips 24 are distributed in an equiangular mode along the annular direction relative to the axis of the straight rod 2, and an arc reinforcing part 25 is arranged between every two adjacent reinforcing straight strips 24. By utilizing the circular arc reinforcing part 25, the condition that the included angle between the reinforcing straight strip 24 and the straight rod 2 is broken by pressure can be reduced, and the function of strength compensation is further achieved.

In order to reduce the possibility that the straight rod 2 is completely inserted into the straight hole 12, the functions of disassembly detection and replacement detection in the processing and production process are facilitated. One end of the straight rod 2 is fixedly connected with a positioning block 21, the end face, far away from the pin shaft body 1, of the limiting head 11 is provided with a positioning groove 13, the positioning groove 13 is communicated with the straight hole 12, the positioning block 21 is spliced with the positioning groove 13, and the positioning block 21 is accommodated in the positioning groove 13. Therefore, the positioning function of the positioning groove 13 is utilized, the positioning block 21 is abutted and limited with the inner bottom surface of the positioning groove 13, and the function that the straight rod 2 is completely inserted into the straight hole 12 is reduced.

In order to further improve the function of the straight rod 2 which can be disassembled and replaced. The positioning block 21 has an external thread portion 22 on the outer peripheral surface thereof, an internal thread portion 14 on the inner peripheral surface of the positioning groove 13, and the positioning block 21 is screwed to the internal thread portion 14 of the positioning groove 13 via the external thread portion 22. The end face of the positioning block 21 away from the straight rod 2 is provided with an inner hexagonal groove 23. Therefore, after the straight rod 2 is inserted into the straight hole 12, a hexagonal wrench can be inserted into the internal hexagonal groove 23, so that the straight rod 2 and the positioning block 21 can be rotated conveniently, and the external thread part 22 of the positioning block 21 is in threaded connection with the internal thread part 14 of the positioning groove 13, thereby achieving the beneficial effect of simple and convenient operation.

Referring to fig. 1 to fig. 2, in order to disclose the structure of locating part, thereby reduce the utility model discloses a round pin axle is at the in-service use in-process, the condition that round pin axle body 1 breaks away from the one end of keeping away from its spacing head 11. The limiting part comprises a limiting hole 16 which is arranged in the peripheral surface of the pin shaft body 1 and is far away from one side of the limiting head 11, and the limiting hole 16 is used for inserting the bolt. Therefore, in the actual use process, the bolt is inserted into the limiting hole 16, and the situation that the pin shaft body 1 is separated from the position far away from the limiting head 11 is reduced by utilizing the limiting effect of the bolt.

In order to further improve the variety of the application of the limiting part, when the number of the bolts is insufficient, the limiting function of the tail end can be realized through other structures. The length of the straight rod 2 is smaller than that of the pin shaft body 1, and the straight hole 12 penetrates through the pin shaft body 1, so that when the straight rod 2 is completely inserted into the straight hole 12, a part of available space still exists on one side, away from the limiting head 11, of the straight hole 12. One side of the inner peripheral surface of the straight hole 12, which is far away from the limiting head 11, is provided with a threaded connection portion 15, the threaded connection portion 15 is in threaded connection with a connecting column 3, one end of the connecting column 3, which is far away from the pin shaft body 1, is fixedly connected with a limiting block 31, and the outer peripheral surface profile of the limiting block 31 is larger than that of the pin shaft body 1. The stopper 31 is provided with an anti-slip thread 32 on its outer circumferential surface, thereby improving the convenience of the rotational operation of the stopper 31.

Because the utility model discloses a round pin axle is big round pin axle, is arranged in the main equipment usually, because when utilizing two parts of round pin axle articulated, because part weight is great, under the gravity pressure effect of round pin axle, sometimes can rotate the dead condition of card earlier. Consequently in order to utilize the utility model discloses a thereby round pin axle improves to rotate smooth and easy degree between two parts of connecting. The outer peripheral surface of the pin shaft body 1 is provided with a thread oil groove 17, and the thread oil groove 17 is arranged along the spiral direction relative to the axis of the pin shaft body 1. Therefore, in the actual use process, the surface of the pin shaft body 1 is coated with the lubricating grease, so that the lubricating grease can be better remained in the thread oil groove 17, and the lubricating effect is further provided for the connected components in the subsequent actual use process.

Example 2

Example 2 differs from example 1 in that:

referring to fig. 3, in order to realize that the straight rod 2 abuts against the inner wall of the straight hole 12 by using the reinforced portion thereof, so as to realize strength compensation, a corresponding required gap can be provided for the position between the straight hole 12 and the straight rod 2, and thus the function of reducing weight is achieved. The reinforcing part comprises a reinforcing thread strip 26 integrally connected with the outer peripheral surface of the straight rod 2, the reinforcing thread strip 26 is arranged along the spiral direction relative to the axis of the straight rod 2, and a fillet 27 is arranged between the thread wall surface of the reinforcing thread strip 26 and the outer peripheral surface of the straight rod 2. By utilizing the fillet 27, the condition that the included angle between the reinforcing straight bar 24 and the straight bar 2 is broken by pressing can be reduced, and the function of intensity compensation is further achieved.

The embodiment of the present invention is not limited to this, and according to the above-mentioned content of the present invention, the common technical knowledge and the conventional means in the field are utilized, without departing from the basic technical idea of the present invention, the present invention can also make other modifications, replacements or combinations in various forms, all falling within the protection scope of the present invention.

Claims

1. The utility model provides a big round pin axle of light type which characterized in that: the hinge pin comprises a hinge pin body, wherein one end of the hinge pin body is fixedly connected with a limiting head, one side, far away from the limiting head, of the hinge pin body is detachably connected with the limiting part, a straight hole is formed in the end face, far away from the hinge pin body, of the limiting head, a straight rod is inserted into the straight hole, the outer peripheral surface of the straight rod is provided with a reinforcing part, and the reinforcing part abuts against the inner peripheral surface of the straight hole.

2. A lightweight large pin according to claim 1, further comprising: the reinforcing part comprises a plurality of reinforcing straight strips integrally connected with the peripheral surface of the straight rod, the reinforcing straight strips are distributed in an equiangular mode along the annular direction relative to the axis of the straight rod, and arc reinforcing parts are arranged between every two adjacent reinforcing straight strips.

3. A lightweight large pin according to claim 1, further comprising: the reinforcing part comprises a reinforcing thread strip integrally connected with the outer peripheral surface of the straight rod, the reinforcing thread strip is arranged along the spiral direction relative to the axis of the straight rod, and a fillet is arranged between the thread wall surface of the reinforcing thread strip and the outer peripheral surface of the straight rod.

4. A lightweight large pin according to claim 2 or 3, wherein: the positioning pin comprises a straight rod and is characterized in that a positioning block is fixedly connected to one end of the straight rod, a positioning groove is formed in the end face, far away from the pin shaft body, of the limiting head, the positioning groove is communicated with the straight hole, the positioning block is connected with the positioning groove in an inserted mode, and the positioning block is contained in the positioning groove.

5. A lightweight large pin according to claim 4, wherein: the positioning block is characterized in that an external thread part is arranged on the outer peripheral surface of the positioning block, an internal thread part is arranged on the inner peripheral surface of the positioning groove, and the positioning block is in threaded connection with the internal thread part of the positioning groove through the external thread part.

6. A light weight large pin shaft according to claim 5, characterized in that: an inner hexagonal groove is formed in the end face, far away from the straight rod, of the positioning block.

7. A lightweight large pin according to claim 1, further comprising: the limiting part comprises a limiting hole which is formed in the outer peripheral surface of the pin shaft body and is far away from one side of the limiting head, and the limiting hole is used for inserting a bolt.

8. The lightweight large pin of claim 7, further comprising: the length of the straight rod is smaller than that of the pin shaft body, the straight hole penetrates through the pin shaft body, a threaded connecting portion is arranged on one side, away from the limiting head, of the inner peripheral surface of the straight hole, a connecting column is in threaded connection with the threaded connecting portion, a limiting block is fixedly connected to one end, away from the pin shaft body, of the connecting column, and the outline of the outer peripheral surface of the limiting block is larger than that of the outer peripheral surface of the pin shaft body.

9. A lightweight large pin according to claim 8, further comprising: the outer peripheral surface of the limiting block is provided with anti-skidding lines.

10. A lightweight large pin according to claim 1, further comprising: the outer peripheral surface of the pin shaft body is provided with a threaded oil groove, and the threaded oil groove is arranged along the spiral direction relative to the axis of the pin shaft body.